IPF-Gazelle produces artifacts containing all available Gazelle HL7v2 validation profiles. It is an upstream project to IPF, built and released independently.

The following extensions to the HL7v2 conformance profile syntax are supported:

• attribute /HL7v2xConformanceProfile/HL7v2xStaticDef/Segment/Field/@ipf:Nullable controls whether the HL7 NULL "" is a valid value of the whole field.